EP0774544A1 - Filet tridimensionnel et procede de retenue de vegetation sur une pente - Google Patents

Filet tridimensionnel et procede de retenue de vegetation sur une pente Download PDF

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Publication number
EP0774544A1
EP0774544A1 EP96912285A EP96912285A EP0774544A1 EP 0774544 A1 EP0774544 A1 EP 0774544A1 EP 96912285 A EP96912285 A EP 96912285A EP 96912285 A EP96912285 A EP 96912285A EP 0774544 A1 EP0774544 A1 EP 0774544A1
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EP
European Patent Office
Prior art keywords
net
dimensional
parts
nets
fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96912285A
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German (de)
English (en)
Other versions
EP0774544B1 (fr
EP0774544A4 (fr
Inventor
Koichi Matsumoto
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Asahi Doken KK
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Asahi Doken KK
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Publication date
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Publication of EP0774544A1 publication Critical patent/EP0774544A1/fr
Publication of EP0774544A4 publication Critical patent/EP0774544A4/fr
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Publication of EP0774544B1 publication Critical patent/EP0774544B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E02D17/202—Securing of slopes or inclines with flexible securing means
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/20—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting articles of particular configuration
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
    • D10B2403/0213—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics with apertures, e.g. with one or more mesh fabric plies
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0243—Fabric incorporating additional compounds enhancing functional properties
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/204—Geotextiles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y10T442/488—Including an additional knit fabric layer

Definitions

  • This invention relates to a three-dimensional net which can be suitably used widely for various kinds of netting such as vegetation netting for the preservation of slopes and the establishment and stabilization of greenery on slopes, water collection and drainage netting and protective netting for residential areas, netting for protecting rock faces, safety netting for building use, netting for use as a thermal insulating material and netting for sports use and for medical use and so on, as a material for industrial uses such as core materials of cushions and mats and cores for reinforcing various kinds of moldings and the like, and for clothing and various other uses, and to a vegetation planting method for planting vegetation on a slope using this net.
  • netting such as vegetation netting for the preservation of slopes and the establishment and stabilization of greenery on slopes, water collection and drainage netting and protective netting for residential areas, netting for protecting rock faces, safety netting for building use, netting for use as a thermal insulating material and netting for sports use and for medical
  • a relatively hard thread having good shape holding is required, and from the point of view of the net setting work it is preferable that the whole net be quite hard and have good shape retention.
  • a rather flexible net is preferable and it is not desirable that the whole net be made hard.
  • Another object of the invention is to provide a net the shape retention of parts forming net mesh spaces of which as a three-dimensional net is good and whose air permeability and water permeability and water retention are excellent, and also to provide a three-dimensional net which by being combined with other materials such as wadding or being combined with sheet materials can be given functions not had by conventional nets.
  • Further object of the invention is to provide a vegetation planting method for planting vegetation on a slope or the like in which method above-described three-dimensional net are used.
  • a first aspect of the invention provides a three-dimensional net made by warp knitting and comprising front and rear base nets and connecting yarns connecting together the front and rear base nets with a predetermined space therebetween, wherein braid parts forming meshes of each of the front and rear base nets comprise one or a plurality of wales, the meshes of a first of the front and rear base nets are larger than the meshes of a second of the front and rear base nets, the front and rear base nets are connected together by the connecting yarns being passed between all the braid parts of the first base net and braid parts of the second base net facing the braid parts of the first net, connecting parts formed by the connecting yarns form net mesh spaces corresponding to the large meshes of the first base net and braid parts of the second base net not connected to the first base net by the connecting yarns form a plurality of small meshes inside the net mesh spaces.
  • a second aspect of the invention provides a three-dimensional net similarly made by warp knitting wherein braid parts forming meshes of each of the base nets comprise one or a plurality of wales, the base nets are connected together by the connecting yarns being passed between one in every two or more of the braid parts of each of the base nets, connecting parts formed by the connecting yarns form net mesh spaces larger than the meshes of the base nets and braid parts of the base nets not connected by the connecting yarns form a plurality of small meshes inside the net mesh spaces.
  • the braid parts of the front and rear base nets are made up of one or a plurality of wales the tensile strength of these braid parts is high.
  • the braid parts of the front and rear base nets each comprise chain stitching yarns of one or a plurality of wales and an inlay yarn cross-swing inlaid into this, and as a result the braid parts are even stronger and do not break easily.
  • the braid parts forming the meshes of the front and rear base nets comprise one or a plurality of wales continuing in the knitting direction and the braid parts are knotted at intervals of a predetermined spacing corresponding to the respective meshes alternately to braid parts adjacent on the left and right in zigzags so that they form polygonal meshes such as square or hexagonal meshes.
  • the braid parts of the front and rear base nets between which the connecting yarns pass comprise a plurality of wales and the connecting parts formed by the connecting yarns have a width of a plurality of wales and form a three-dimensional shape which is substantially hollow or has three-dimensional voids and is permeable to air and water.
  • the resistance to compression of the connecting parts forming the net mesh spaces is high, and as a result of this together with the shape holding effect of the braid parts on one or both of the front and rear sides not having connecting yarns attached thereto it is possible to well maintain the three-dimensional state of the connecting parts.
  • the connecting parts themselves have voids inside them continuing in the length direction, and air and water permeability are therefore well maintained.
  • the braid parts of the front base net are knotted in different positions from the braid parts of the rear base net so that the connecting parts connecting together the front and rear base nets alternately slope to the left and right.
  • the connecting parts As a result of the three-dimensional connecting parts forming the net mesh spaces sloping alternately to the left and right in this way, when a load or pressure acts on the net in its thickness direction, the connecting parts so act on each other that they prevent each other from falling and as a result of this together with the shape holding effect of the braid parts not having connecting yarns attached thereto the net has excellent compressive strength and shape retention and also has good elasticity. Therefore, excessive compression or crushing of the net when the net is used as embedded in ground is prevented and it is possible to well maintain the characteristics and spaces of the net as a three-dimensional structure and a three-dimensional net.
  • a three-dimensional net of the aspects of the invention described above has both the function of a three-dimensional net of a relatively large mesh size provided by the net mesh spaces and the function of a net of a smaller mesh size, and utilizing these characteristics can be used for various applications, and in particular can be suitably used as a vegetation net used in vegetation planting work for preserving a slope and establishing greenery on a slope and as a safety net or a protective net.
  • sliding of stones and earth and sand or topsoil or the like and runoff and scattering of planting material can be prevented by means of the connecting parts of the three-dimensional structure forming the net mesh spaces, and sliding of small stones and earth and sand can be prevented with the small mesh parts inside the net mesh spaces.
  • a three-dimensional net according to the fifth aspect of the invention which has voids in the connecting parts, is used as embedded, an aeration effect providing roots of plants with oxygen through the voids in the connecting parts is obtained, and the insides of the connecting parts serve as flow passages and ventilation and water supply and drainage actions are carried out with good efficiency.
  • the front and rear base nets are made nets knitted using yarns of different thicknesses and with respective knitting machine gauges made different by a factor of at least two.
  • yarn strands constituting the front and rear base nets and the connecting yarns comprise a corroding fiber such as a natural fiber, a decomposing chemical fiber or a blend spun fiber consisting of a blend of these with a synthetic fiber.
  • all or a part of yarn strands constituting the front and rear base nets and the connecting yarns are made of a highly water absorbent resin fiber or a blend spun fiber including such a fiber.
  • a three-dimensional net according to this aspect of the invention is particularly suited for establishing greenery on land having poor water retention such as desert land.
  • all or a part of yarn strands constituting the front and rear base nets and the connecting yarns comprise one of a thermosetting fiber, a thermocontracting fiber and a thermofusing fiber or a blend spun fiber or paralleled fibers including any of these fibers and is heat processed after being knitted.
  • a wadding material, a cushion material or a heat insulating material comprising a natural fiber, a synthetic fiber, a decomposing chemical fiber, a water retaining fiber, a carbon or glass fiber or other fiber or a blend spun fiber including any of these fibers or another material such as fertilizer can be held inserted into the net mesh spaces in any locations or joined to the front and rear base nets and the connecting parts.
  • a wadding material, a cushion material or a heat insulating material comprising a natural fiber, a synthetic fiber, a decomposing chemical fiber, a water retaining fiber, a carbon or glass fiber or other fiber or a blend spun fiber including any of these fibers or another material such as fertilizer
  • a three-dimensional net of any of the aspects described above can be been made into a composite structure by being spread open and held in a three-dimensional state and joined to a sheet-form material such as a woven fabric, a nonwoven fabric or paper, a planar or three-dimensional net-form material or a synthetic resin or metal plate-form material.
  • a sheet-form material such as a woven fabric, a nonwoven fabric or paper, a planar or three-dimensional net-form material or a synthetic resin or metal plate-form material.
  • a fourteenth aspect of the invention in a three-dimensional net of any of the aspects described above can have a fertilizer, a water retaining agent or a seed germinating agent or the like adhered thereto.
  • a fifteenth aspect of the invention provides a vegetation planting method for planting vegetation on a slope or the like, which method comprises setting on a slope or the like a three-dimensional net of any of the aspects described above spread open and held in a three-dimensional state and holding planting material including seeds in the net spaces formed by the connecting parts connecting together the front and rear base nets.
  • planting material such as seeds and fertilizer, topsoil, water retaining agent and the like can be efficiently held by the relatively large net mesh spaces formed by the connecting parts connecting together the front and rear base nets and runoff and scattering caused by wind and rain can be prevented, and even though the net mesh spaces are relatively large the braid parts forming the small meshes existing inside them prevent sliding of earth and sand of the slope.
  • topsoil when topsoil is used, the weight of the topsoil holds down the small base net and as a result the whole net is kept in contact with the slope.
  • plants can adhere to the slope in the net mesh spaces and can grow without being obstructed by the net.
  • this vegetation planting method in the case of a three-dimensional net of the fifth aspect of the invention, because it has voids in the connecting parts formed by the connecting yarns and therefore has good air and water permeability, at times of rainfall rain is caught in the connecting parts surrounding the net mesh spaces and flows through these connecting parts along the braid parts and as a result the slope does not become soaked more than necessary and sliding of the slope can be effectively prevented.
  • a sixteenth aspect of the invention provides a vegetation planting method for planting vegetation on a slope or the like using the same kind of three-dimensional net as in the fifteenth aspect described above, which method comprises setting this three-dimensional net on a slope or the like spread open and held in a three-dimensional state and disposing in the net mesh spaces formed by the connecting parts connecting together the front and rear base nets in any position one or more of a vegetation bag filled with planting material including seeds, a solid planting material including seeds, a fertilizer bag, a solid fertilizer and a water retaining material.
  • Fig. 1 is a perspective view of a part of a three-dimensional net A made from synthetic fiber yarns by warp knitting
  • Fig. 2 is an enlarged perspective view of a part of the net
  • Fig. 3 is a lapping chart of the knit structure of the net.
  • the reference numerals 1 and 2 denote front and rear base nets and 3 denotes connecting yarns connecting together the two base nets 1 and 2 while providing a predetermined spacing therebetween.
  • the reference numeral 11 denotes braid parts forming meshes 12 of the front side base net 1 and the reference numeral 21 denotes braid parts forming meshes 22 of the rear side base net 2, and these braid parts 11 and 12 each consist of one wale or a plurality of wales and are formed in parallel with each other.
  • the meshes of one of the base nets are larger than the meshes 22 of the other base net 2, and the base nets 1 and 2 are connected by connecting yarns 3 running between the braid parts 11 forming these large meshes 12 and those braid parts 21 of the other base net 2 which face these.
  • connecting parts 30 formed by the connecting yarns 3 form net mesh spaces S corresponding to the large meshes 12, and the braid parts 21 of the other base net 2 which do not have connecting yarns 3 attached thereto form a plurality of small meshes 22 inside each of the net mesh spaces S.
  • the size of the meshes 22 of the base net 2 is set so that four meshes 22 are formed inside each of the net spaces S.
  • the braid parts 11, 21 forming the meshes 12, 22 of the front and rear base nets 1, 2 each consist of one or a plurality of wales knitted from chain stitching yarns and an inlay thread cross-swing inlaid into these wales of chain stitching; these braid parts 11, 21 are knotted together with the braid parts 11, 21 adjacent on the left and right alternately at predetermined intervals corresponding to the meshes 12, 22 and continue in the knitting direction in a zigzag, and as a result the meshes 12, 22 each have a polygonal shape such as a square or a rhombus or an approximate hexagon.
  • the reference numerals 13 and 23 respectively denote parts where the braid parts 11, 11 are knotted together and parts where the braid parts 21, 21 are knotted together.
  • the braid parts 11, 21 of the front and rear base nets 1, 2 each consist of a plurality of wales
  • the connecting yarns 3 are passed back and forth between plurality of the wales of each of the front and rear braid parts 11, 21 and therefore have a width extending over a plurality of wales
  • the connecting parts 30 formed by the connecting yarns 3 continue in a zigzag in the knitting direction and have a three-dimensional shape which is substantially hollow or has three-dimensional voids and is permeable to air and water in the length direction and also from inside to outside.
  • the reference numeral 4 denotes spaces inside the connecting parts 30.
  • the three-dimensional net A of this preferred embodiment is made by warp knitting with a double Raschel machine having two needle beds, and a specific example of how it can be knitted will now be described with reference to Fig. 3.
  • inlay yarns are cross-swing inlaid into chain stitching wales made by the chain stitching guides L2 and L3 and braid parts 11 of the front side base net 1 consisting of four wales each are thereby knitted, and by stitch forming with the chain stitching threads being shifted through four wales to the left and right alternately at intervals of a predetermined number of courses equivalent to the meshes 12 the braid parts 11 are alternately knotted at knot parts 13 to the braid parts 11 adjacent on the left and right and then the chain stitching threads are returned to their original wale positions.
  • the middle two chain stitching threads of each of the two types of chain stitching guides L2 and L3 are shown only in part.
  • inlay threads are cross-swing inlaid into chain stitching wales made by the chain stitching guides L6, L7 and braid parts 21 of the rear side base net 2 consisting of four wales each are thereby knitted, and by stitch forming with the chain stitching threads being shifted through two wales to the left and right alternately at intervals of a predetermined number of courses equivalent to the meshes 22 the braid parts 21 are knotted alternately at knot parts 23 to the braid parts 21 adjacent on the left and right and then the chain stitching threads are returned to their original wale positions.
  • the rear side braid parts 21 are alternately knotted to braid parts 21 adjacent on the left and right at positions corresponding to the knot parts 13 of the braid parts 11 and at positions mid-way between these.
  • the braid parts 21 of the rear side base nets 2 form four small meshes 22 inside each of the meshes 12 of the front side base net 1 as seen from above and of a mesh area 1/4 that of the meshes 12.
  • connection yarns 3 By connecting knitting being carried out in this way, the braid parts 11 of the front side base net 1 and only the braid parts 21 of the rear side base net 2 facing these are connected by the connecting yarns 3 over a width of two wales.
  • These connecting parts 30 consist only of the connecting yarns 3 passed between the two base nets 1, 2, and by the knitting machine gauge being suitably set form a three-dimensional shape which is substantially hollow or has three-dimensional voids and is permeable to air and water.
  • the fabric is suitably extended in the width direction into the form of a net and the meshes 12, 22 of the front and rear base nets 1, 2 are opened and thermally set and the yarns used are thereby given a suitable shape retaining strength and the connecting parts 30 formed by the connecting yarns 3 form net mesh spaces S corresponding to the meshes 12 and the three-dimensional net A shown in Fig. 1 and Fig. 2 is thereby obtained.
  • Fig. 4 shows another example of a knit structure of a three-dimensional net A of the invention.
  • the braid parts 11 of the front side base net 1 are made up of two wales of chain stitching yarn and inlay yarn
  • the braid parts 21 of the rear side base net 2 are made up of stitching lines of one wale of chain stitching yarn and inlay yarn
  • the connecting yarns 3 are passed between the two base nets over a width of one wale.
  • the means by which the braid parts 11, 21 are knotted together and the method of connection by the connecting yarns 3 are the same as in the preferred embodiment described above.
  • the sizes and shapes of the meshes 12, 22 of the front and rear base nets 1, 2 and the net mesh spaces S in the three-dimensional net A can be set freely by setting the positions of the knot parts 13, 23 of the braid parts 11, 21 and the number of courses therebetween, or by means of the knit structure or adjustment of the expansion width.
  • the braid parts 11, 21 of the base nets 1, 2 can each consist simply of one wale.
  • the width of the connecting parts 30 formed by the connecting yarns 3 can be made to a width of one wale or a plurality of wales.
  • the connecting parts 30 themselves have inside them voids continuous in the length direction, and consequently the air and water permeability of the net are kept good, and its resistance to compression is also good.
  • the spacing between the front and rear base nets 1, 2 (the height of the connecting parts) can be suitably set by adjusting the spacing of the two needle beds of the double Raschel machine.
  • the connecting parts 30 extend over a plurality of wales, the density of the connecting yarns 3 can be made coarse or made fine by means of the wale spacing (the gauge spacing).
  • Fig. 5 and Fig. 6 show another preferred embodiment of a three-dimensional net A of the invention wherein meshes smaller than the net mesh spaces are formed on both the front side and the rear side.
  • braid parts 11, 21 forming meshes 12, 22 of front and rear base nets 1, 2 are each made up of one or a plurality of wales and one in every two of the braid parts 11, 21 or one in every three or more of the braid parts 11, 21 of the two base nets 1, 2 are connected by connecting yarns 3 passed between the two base nets 1, 2.
  • Net mesh spaces S larger than the meshes 12, 22 of the front and rear base nets 1, 2 are formed by connecting parts 30 formed by these connecting yarns 3, and a plurality of meshes 12, 22 smaller than the net mesh spaces S are formed inside the net mesh spaces S by braid parts 11, 21 of the front and rear net mesh spaces S not having connecting yarns 3 attached thereto.
  • the sizes of the meshes 12, 22 of the two base nets 1, 2 are set so that the braid parts 11, 21 of the front and rear base nets 1, 2 pass between opposite sides of the net mesh spaces S so that they intersect in an X-shape and form four meshes 22.
  • This net A can be obtained by changing the knitting structure of the two types of chain stitching guides L2 and L3 and the inlay yarn guide L1 knitting the front side base net 1 in knitting of the knit structure shown in Fig. 3 so that they have the same structure as the chain stitching guides L6 and L7 and the inlay yarn guide L8 knitting the rear side base net 2.
  • the reference numerals 13 and 23 denote parts where the respective braid parts are knotted together.
  • deformation of the connecting parts 30 forming the net mesh spaces S is limited by the front and rear side braid parts 11, 21, and it is possible to obtain good shape retention of the three-dimensional state and the net mesh spaces S.
  • the braid parts 11, 21 of the front and rear base nets 1, 2 are preferably made up of wales of chain stitching yarns and inlay yarns, and the connecting parts 30 forming the net mesh spaces S preferably have a width extending over a plurality of wales and form an air and water permeable substantially hollow three-dimensional shape.
  • the widths of the braid parts 11, 21 of the front and rear base nets 1, 2 and the shapes and sizes of the net mesh spaces S, the number of front and rear meshes 12, 22 inside the net mesh spaces S, the width of the connecting parts 30 and the overall thickness of the net can be suitably changed in the same way as in the preferred embodiment described above.
  • a three-dimensional net of either of the preferred embodiments described above for example as shown in Fig. 7, by carrying out knitting with the positions of the knot parts 13, 23 of the front and rear braid parts 11, 21, i.e. the positions of the knots created by wale shifting of the chain stitching yarns and inlay yarns constituting the braid parts 11, 21 and the connecting yarns passing between these, mutually front-rear staggered, it is possible to make the connecting parts 30 formed by the connecting yarns 3 slope alternately and obtain for example a truss structure.
  • the net has excellent compression-resisting strength and shape retention and good elasticity, and its characteristics as a three-dimensional net can be well maintained.
  • this net (A) when used for planting vegetation on a slope B, by the sloping connecting parts 30 being laid on the slope B in the direction shown in Fig. 8, the sloping connecting parts 30 and the slope B become like pockets and can hold vegetation planting materials and earth and sand and the like well.
  • the form of the net can be freely set, with for example the knot parts 13, 23 being made to come in front-rear regularly alternating positions or their positions being slightly front-rear staggered.
  • the yarn strands constituting the front and rear base nets 1, 2 are not particularly limited, but normally synthetic fiber yarns having good resistance to water are used, and multifilament yarns or monofilament yarns of nylon and carbon fiber and other synthetic fibers can be suitably used. Of course, yarns of natural fiber can also be used.
  • the connecting yarns 3 are also suitably chosen from among synthetic fiber yarns and natural fiber yarns taking into consideration elasticity and strength so that they are suited to connecting the front and rear base nets 1, 2 and supporting the three-dimensional shape of the net, and mainly from the point of view of three-dimensional structure retention a monofilament yarn is preferably used.
  • These yarn strands can be suitably given rigidity and resistance to compression by being thermally set after knitting or by synthetic resin processing. Also, the greater the number of connecting yarns 3 connecting together the front and rear base nets 1, 2 is and the higher their density is the greater the resistance to compression and elastic strength in the thickness direction of the net becomes. For a given material such as nylon, the thicker the yarn, the firmer in compression the yarn is.
  • the thicknesses and materials of these strands are determined taking into consideration the strength, tensile strength and elasticity and so on required for the application. For example, when knitting a vegetation net using a double Raschel machine with a gauge (number of needles per inch) of 14 to 9, for the base nets a yarn of 100 to 2000 denier and preferably 200 to 600 denier is suitably used and for the connecting yarns a yarn of 100 to 3000 denier and preferably 200 to 1000 denier is suitably used.
  • the gauge finer for example 22 to 18 gauge, and use a finer yarn
  • the gauge can be made 4.5 to 3 and a thicker yarn can be used and the strength thereby increased.
  • the knitting can be carried out with the knitting machine gauge, i.e. the gauge (number of needles per inch) of the front and rear needle beds, needles and guides, of a double Raschel machine knitting the braid parts 11, 21 of the front and rear base nets 1, 2 set to specifications differing by a factor of at least two (for example front 9 gauge, rear 18 gauge) and using yarns of different thicknesses at the front and rear.
  • the knitting machine gauge i.e. the gauge (number of needles per inch) of the front and rear needle beds, needles and guides, of a double Raschel machine knitting the braid parts 11, 21 of the front and rear base nets 1, 2 set to specifications differing by a factor of at least two (for example front 9 gauge, rear 18 gauge) and using yarns of different thicknesses at the front and rear.
  • the knitting machine gauge i.e. the gauge (number of needles per inch) of the front and rear needle beds, needles and guides, of a double Raschel machine knitting the braid parts 11, 21 of the front and rear base
  • the strands constituting the front and rear base nets 1, 2 and the connecting yarns it is also possible to use yarns made of corroding fibers such as cotton or other natural fibers, rayon and artificial silk thread, decomposing chemical fibers such as enzyme decomposable fibers decomposed by enzymes, or biodegradable fibers decomposed by microorganisms and bacteria, or blend spun fibers consisting of these blended with synthetic fibers.
  • the three-dimensional net is corroded or decomposed with the passing of years in use and can be suitably used as a vegetation net.
  • thermosetting fiber a thermosetting fiber
  • thermally contracting fiber a thermally fusing fiber
  • a blend spun fiber or paralleled fibers including one or more of these fibers for all or part of the strands constituting the front and rear base nets 1, 2 and the connecting yarns and strengthen the stitch structure by heat processing after knitting to improve the stability of the shape of the net.
  • the three-dimensional net A when necessary it is possible to suitably adhere a synthetic resin such as acryl resin to at least one of the front and rear base nets 1, 2, for example the rear side base net 2 having small meshes in an amount such that it does not impair the air and water permeability of the net, by dipping or laminating means.
  • a synthetic resin such as acryl resin
  • the stitches of the warp knitting are held fixed and the respective base net is strengthened and there is no risk of the stitching softening or fraying and the structure becomes more stable.
  • a water retention agent such as a highly water absorbent resin to the net by coating means or dipping, and in this case also the water retention of the net is further improved.
  • vegetation planting materials including seeds, fertilizers, water retaining agents and seed germinating agents and the like using coating means or adhering means.
  • vegetation planting work can be carried out just by setting the net on a slope.
  • the three-dimensional net described above can be given a composite structure by being spread and held in its three-dimensional state and joined by means such as stitching or laminating to a woven or nonwoven fabric or paper or other sheet-form material or to a planar or three-dimensional mesh material or to a plate-shaped material made of synthetic resin or metal.
  • pipe members such as pipes with holes or fiber mesh pipes, reinforcing rope or cord-shaped members of wadding, nonwoven fabric or sponge bodies or the like into the insides of the connecting parts 30 extending across a plurality of wales.
  • the net when used as a vegetation planting net, it is possible to insert a band-shaped bag holding planting material including particularly seeds and fertilizers, water retaining agents and seed germinating agents and the like. Also, by inserting a band-shaped bag holding medical products, it is possible to suitably use the three-dimensional net as a net for medical use.
  • the thickness of the three-dimensional net A of the invention and the sizes of the net mesh spaces S and the connecting parts 30 differ according to the application and so on.
  • a net of which the net thickness is in the range 3 to 150mm, the width of the net mesh spaces S is 10 to 500mm and the width of the braid parts is 0.5 to 200mm is generally used, but of course the invention can also be applied to nets of dimensions other than these.
  • the three-dimensional net A described above can be suitably used widely as vegetation netting used in planting for the preservation of slopes and the establishment and stabilization of greenery on slopes, water collecting and draining netting for residential areas, safety netting for use in construction work and protective netting for use in building, reinforcing material and structure making netting used with blown-on mortar or synthetic resin or the like, netting for medical uses and for sports uses, industrial materials such as core materials and intermediate materials of mats and cushions, and in various other fields. Among these, it can be particularly suitably used in carrying out vegetation planting work on slopes.
  • the three-dimensional net A is suitably spread out and extended in the width direction and the connecting parts are brought to their three-dimensional state, and the front side or the rear side is laid so as to be spliced with the slope and fixed with anchor pins or the like.
  • the rear side base net 2 having small meshes is laid so as to be spliced with a slope B.
  • this planting material C When the net A has been set in this way, by blowing one or several planting materials such as seeds, fertilizers and topsoil, a water retaining agent such as a highly water absorbent resin polymer, and a soil improver, according to the condition of the slope, from above the net A using blowing means, this planting material C enters net mesh spaces S formed by the connecting parts 30 through the meshes 11 of the front side base net 1 and can certainly reach the slope B. Furthermore, the planting material C is held inside the net mesh spaces S by the connecting parts 30 forming the three-dimensional structure of the net.
  • planting materials such as seeds, fertilizers and topsoil, a water retaining agent such as a highly water absorbent resin polymer, and a soil improver
  • the planting material C containing seeds and fertilizer and topsoil and the like can be efficiently and certainly held by the relatively large net mesh spaces S formed by the connecting parts 30 connecting together the front and rear base nets 1, 2 and furthermore a supporting action and a windbreaking action of these connecting parts 30 prevent runoff and scattering of the planting material C due to wind and rain.
  • sliding of earth and sand of the slope is prevented by the braid parts 21 of the base net 2 of small mesh size existing inside the net mesh spaces S.
  • vegetation can adhere to the slope and grow in the net mesh spaces S.
  • the connecting parts 30 have an three-dimensional shape which is substantially hollow or has three-dimensional voids, when it rains, rainwater flows through the connecting parts 30 and the surface of the slope is not soaked excessively, and even if the rear side of the net (the side spliced with the slope) is buried in cases wherein a relatively large amount of topsoil is blown into the net during planting, it is possible to ensure good air water permeability with the connecting parts 30. As a result, planting and establishment of greenery on a slope can be carried out certainly.
  • the braid parts 11, 21 of the front and rear base nets 1, 2 are made up of one or a plurality of wales, compared to a case wherein they consist only of simple threads like those of a woven net, they are stronger and there is no danger of them easily breaking and they can be used over long period with good stability.
  • Fig. 10 it is possible to carry out planting by disposing planting bags D filled with the above-mentioned planting material or fertilizer bags or the like in net mesh spaces S in any position in the net. Besides the planting bags and the like mentioned above, it is also possible to dispose solid planting material or solid fertilizer or water retaining material in the same way. In this case, when as shown in Fig. 10 braid parts 11, 21 of the base nets 1, 2 not having connecting yarn attached thereto exist on the both front side and the rear side, the planting bags D or the like can be held with no risk of them falling out.
  • the base nets 1, 2 exist all over the net, it is possible to adjust the density at which the above-mentioned planting bags and fertilizer bags and the like are disposed according to the condition of the slope, and uniformly good vegetation planting and greenery establishment can be carried out.
  • planting bags consist of mesh bags or bags made of corroding fibers or water soluble or decomposing fibers or paper or the like filled with planting material such as seeds and fertilizer and when necessary water retention agent and soil improver and so on, and the fertilizer bags contain one or more suitably selected quick effect, gradual effect or late effect fertilizers.
  • a three-dimensional net of the invention is used as a vegetation net, it is also possible to fix a vegetation mat consisting of seeds and fertilizer adhered to a sheet material such as a nonwoven fabric made from corroding fibers such as natural fibers or decomposing chemical fibers to the base net having the small mesh size.
  • the net A is made of corroding fibers or decomposing chemical fibers or a blended fiber spun from these and a synthetic fiber it is possible to hold the planting material with the net certainly during an initial stage of the establishment of vegetation and after the plants have grown the net corrodes or decomposes and does not hinder the growth of the plants, and removal work also becomes unnecessary.
  • the water retention of the net itself improves and it is possible to suitably use the net also for establishing greenery on land such as desert whose water retention is poor.
  • a water retaining material made by packing a highly water absorbent resin polymer held in a nonwoven fabric or a wadding into a bag can be held in the net mesh spaces S or in suitable locations in the internal spaces of the connecting parts 30 having three-dimensional voids, or a highly water absorbent resin can be held by being adhered to the net itself by coating means, and this net can be laid and embedded near the ground surface of desert ground. In this way, it is possible to secure ample water retention over the entire area of the embedded net. Also, as a result of the connecting parts 30 having three-dimensional voids, the water permeability of the area of the entire net also becomes good and greening of desert is made easy.
  • the three-dimensional net A of the invention described above can also be used as a protective material for cultivating and protecting natural turf.
  • a cushion material can be fitted in the net mesh spaces S and the net used as a core material of a mat or the like, or a heat insulating material can be fitted in the net mesh spaces S and the net used as an insulating mat or as a lagging material.
  • the net can be used as a core material for foam concrete, or by using high tensile fibers such as alamide fibers or carbon fibers in the used yarns the net also can be used as a core material for reinforcement of concrete or synthetic resin board and beam materials.
  • a three-dimensional net according to the invention has both the function of a three-dimensional net provided by the relatively large net mesh spaces formed by the connecting parts connecting together the front and rear base nets and the function of a net of meshes smaller than the net spaces provided by at least one of the front and rear base nets, and furthermore the shape retention of the three-dimensional form of the connecting parts connecting the front and rear base nets is good and strong and the net can well maintain characteristics such as air and water permeability and space holding provided by its three-dimensional structure. Also, by selection of the types of yarn and knitting forms constituting the net and by combination with other materials utilizing the three-dimensional structure of the net, the net can be given functions not had by conventional nets.
  • a three-dimensional net of the invention can be suitably used as vegetation netting and protective netting used in vegetation planting of a slope, and also can be used widely in various other applications such as netting for water collection and drainage and water absorbing netting or as stabilizing and protecting netting of sports grounds and residential areas and so on, protective netting for building use, netting for making structures, and netting for use in fish farming and forestry.
  • the connecting parts connecting the front and rear base nets are three-dimensional and form net mesh spaces, it is possible to dispose planting materials such as topsoil and seeds and fertilizer in these three-dimensional net mesh spaces and runoff and scattering of planting materials such as seeds and fertilizer due to wind and rain can thereby be prevented, and this effect combined with the shape holding effect and the effect of preventing sliding of earth and sand of the base net of small mesh size make it possible to easily carry out vegetation planting work for establishing and stabilizing greenery on a slope.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
EP96912285A 1995-05-01 1996-04-30 Filet tridimensionnel et procede de retenue de vegetation sur une pente Expired - Lifetime EP0774544B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP107362/95 1995-05-01
JP10736295 1995-05-01
JP10736295 1995-05-01
PCT/JP1996/001183 WO1996035021A1 (fr) 1995-05-01 1996-04-30 Filet tridimensionnel et procede de retenue de vegetation sur une pente

Publications (3)

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EP0774544A1 true EP0774544A1 (fr) 1997-05-21
EP0774544A4 EP0774544A4 (fr) 1998-08-05
EP0774544B1 EP0774544B1 (fr) 2002-10-23

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US (1) US6305875B1 (fr)
EP (1) EP0774544B1 (fr)
DE (1) DE69624443T2 (fr)
WO (1) WO1996035021A1 (fr)

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EP0951819A1 (fr) * 1998-04-24 1999-10-27 Createrra Inc. Matériel de terre pour planter un coffre
ES2144941A1 (es) * 1998-01-08 2000-06-16 Aramburu Arbelaiz Melchor Nueva sistema de talud con riego incorporado y maquinaria para el recubrimiento de dicho talud.
EP1158082A2 (fr) * 2000-05-22 2001-11-28 Delta Tooling Co., Ltd. Filet pour traitement ultérieur
EP1344856A1 (fr) * 2000-12-18 2003-09-17 Asahi Doken Kabushiki Kaisha Tissu double face tricote
US6630414B1 (en) * 1998-10-14 2003-10-07 Asahi Doken Kabushiki Kaisha Three-dimensional net, and composite structural material using the same
FR2840853A1 (fr) * 2002-06-12 2003-12-19 Canevaflor Dispositif decoratif, en particulier pour amenagement urbain et paysager
EP2295622A1 (fr) * 2009-09-15 2011-03-16 Seven States Enterprise Co., Ltd. Filet géotextile d'ingénierie pour la végétation
CN102785405A (zh) * 2011-05-16 2012-11-21 财团法人纺织产业综合研究所 植栽用立体织物
CN103798047A (zh) * 2014-02-27 2014-05-21 黄鹤平 一种绿化喷播方法
FR3032727A1 (fr) * 2015-02-17 2016-08-19 Texinov Geotextile de renfort, de lutte contre l'erosion et d'aide a la vegetalisation

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CN107278526B (zh) * 2017-07-26 2022-10-11 中国林业科学研究院林业新技术研究所 一种风力传播的湿地植物种子收获装置及方法
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CN114747390A (zh) * 2022-04-01 2022-07-15 中国煤炭地质总局水文地质局 一种用于坡面绿化的格构网及生态护坡
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2767343A1 (fr) * 1997-08-13 1999-02-19 Bidim Geosynthetics Sa Geofilet pour la protection de sols contre l'erosion
ES2144941A1 (es) * 1998-01-08 2000-06-16 Aramburu Arbelaiz Melchor Nueva sistema de talud con riego incorporado y maquinaria para el recubrimiento de dicho talud.
EP0951819A1 (fr) * 1998-04-24 1999-10-27 Createrra Inc. Matériel de terre pour planter un coffre
US6630414B1 (en) * 1998-10-14 2003-10-07 Asahi Doken Kabushiki Kaisha Three-dimensional net, and composite structural material using the same
US6670018B2 (en) 2000-05-22 2003-12-30 Delta Tooling Co., Ltd. Net fabric to be processed into net product
EP1158082A2 (fr) * 2000-05-22 2001-11-28 Delta Tooling Co., Ltd. Filet pour traitement ultérieur
EP1158082A3 (fr) * 2000-05-22 2002-05-02 Delta Tooling Co., Ltd. Filet pour traitement ultérieur
EP1344856A1 (fr) * 2000-12-18 2003-09-17 Asahi Doken Kabushiki Kaisha Tissu double face tricote
EP1344856A4 (fr) * 2000-12-18 2004-03-03 Asahi Doken Kabushiki Kaisha Tissu double face tricote
WO2003106192A1 (fr) * 2002-06-12 2003-12-24 Canevaflor Dispositif décoratif, en particulier pour aménagement urbain et paysager
FR2840853A1 (fr) * 2002-06-12 2003-12-19 Canevaflor Dispositif decoratif, en particulier pour amenagement urbain et paysager
EP2295622A1 (fr) * 2009-09-15 2011-03-16 Seven States Enterprise Co., Ltd. Filet géotextile d'ingénierie pour la végétation
CN102785405A (zh) * 2011-05-16 2012-11-21 财团法人纺织产业综合研究所 植栽用立体织物
CN102785405B (zh) * 2011-05-16 2015-04-22 财团法人纺织产业综合研究所 植栽用立体织物
CN103798047A (zh) * 2014-02-27 2014-05-21 黄鹤平 一种绿化喷播方法
FR3032727A1 (fr) * 2015-02-17 2016-08-19 Texinov Geotextile de renfort, de lutte contre l'erosion et d'aide a la vegetalisation
WO2016132058A3 (fr) * 2015-02-17 2016-12-29 Texinov Geotextile de renfort, de lutte contre l'érosion et d'aide a la végétalisation

Also Published As

Publication number Publication date
EP0774544B1 (fr) 2002-10-23
DE69624443D1 (de) 2002-11-28
EP0774544A4 (fr) 1998-08-05
US6305875B1 (en) 2001-10-23
DE69624443T2 (de) 2003-06-18
WO1996035021A1 (fr) 1996-11-07

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